package com.myboot.demo.controller;

import com.myboot.demo.config.ProjectUrl;
import com.myboot.demo.enums.ResultEnum;
import com.myboot.demo.exception.SellException;
import lombok.extern.slf4j.Slf4j;
import me.chanjar.weixin.common.api.WxConsts;
import me.chanjar.weixin.common.error.WxErrorException;
import me.chanjar.weixin.mp.api.WxMpService;
import me.chanjar.weixin.mp.bean.result.WxMpOAuth2AccessToken;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import java.net.URLEncoder;

/**
 * @Author: 韦溜溜
 * @Description:微信授权获取openid
 * @Date: Create in 10:52 2018/12/25
 */
@Controller
@Slf4j
@RequestMapping("/wechat")
public class WechatController {

    @Autowired
    private WxMpService wxMpService;

    @Autowired
    private ProjectUrl projectUrl;

    @GetMapping("/authorize")
    public String authorize(@RequestParam("returnUrl") String returnUrl){

        String url = projectUrl.getWechatMpAuthorize()+ "/sell/wechat/userinfo";
        String redirectUrl = wxMpService.oauth2buildAuthorizationUrl(url, WxConsts.OAuth2Scope.SNSAPI_USERINFO, URLEncoder.encode(returnUrl));
        return "redirect:"+ redirectUrl;
    }

    @GetMapping("/userinfo")
    public String userInfo(@RequestParam("code")String code,
                           @RequestParam("state")String returnUrl){
        WxMpOAuth2AccessToken wxMpOAuth2AccessToken = new WxMpOAuth2AccessToken();
        try {
            wxMpOAuth2AccessToken = wxMpService.oauth2getAccessToken(code);
        }
        catch (WxErrorException e){
            log.error("【微信网页授权】{}",e);
            throw new SellException(ResultEnum.WECHAT_MP_ERROR.getCode(),e.getMessage());
        }
        String openid = wxMpOAuth2AccessToken.getOpenId();
        return "redirect:"+ returnUrl + "?openid=" + openid;
    }
}
